body {
    /* 版心 */
    min-width: 320px;
    max-width: 750px;
    /* flexible 给我们划分了 10 等份 */
    width: 10rem;
    margin: 0 auto;
    line-height: 1.5;
    font-family: Arial, Helvetica;
    background: #f2f2f2;
}

a {
    text-decoration: none;
    color: black;
    font-size: .333333rem;
}

@media screen and (min-width:750px) {
    html {
        font-size: 75px!important;
    }
}

.nav {
    display: -webkit-flex;
    position: relative;
    top: 0;
    width: 10rem;
    height: 10%;
    z-index: 9999;
}

.address {
    font-size: .413333rem;
    font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", sans-serif;
    margin-top: 1.163rem;
}

.logo img {
    width: 10rem;
    height: 3rem;
}

.main p {
    font-size: 20px;
    margin-left: 30%;
}

.main i {
    margin-left: 25%;
    font-size: 40px;
    position: relative;
    margin-top: 50%;
}

.main div {
    margin-top: 5%;
}

.main a i:hover {
    color: red;
}

#dibuer {
    margin-left: 3rem;
}

.dibu {
    position: fixed;
    width: 10rem;
    bottom: 0em;
    z-index: 500;
}

.dibu p {
    font-size: 0.3rem;
    margin-left: 2.167rem;
    bottom: 0em;
}